Colli Albani

The Colli Albani, also known as the Alban Hills, are a volcanic complex in Italy 12 miles southeast of Rome.

History
These volcanic hills stand 20 kilometers southeast of Rome. The dominate peak, Monte Cavo, has two small calderas, both containing lakes, one of which is called the Lago di Nemi. The summit was often the site for celebrations by Roman generals after victories during the era when it was illegal for them to do so in Rome.